Elham Faghani; Shahram Nowrouzieh; Ghorban Ali Roshani
Abstract
The seeds harvested from different climates in the process of seed delinting in the factory had different vigor and emergence in the field. Therefore, this research was carried out with the aim of investigating the physiological and mechanical characteristics of delinted seeds in the factory. This project ...
Read More
The seeds harvested from different climates in the process of seed delinting in the factory had different vigor and emergence in the field. Therefore, this research was carried out with the aim of investigating the physiological and mechanical characteristics of delinted seeds in the factory. This project was done as a completely randomized block. The blocks were cultivars from different climate. Finally, traits such as the percentage of mature and immature seeds, seed coat and endosperm weight, ion leakage, seed scratchiness, density, volume, and breaking force of seed were studied. The results showed that the percentage of immature seeds was the highest in Golestan in dry-hot and Khordad in dry-cold. The highest percentage of scratched seeds was in Golestan in dry-moderate and the lowest percentage of scratched seeds was in Golestan in dry-hot province, Kashmer in dry-cold climate and Latif in dry-moderate. The highest percentage of healthy seeds that completed their physiological maturity was observed in Latif in dry-moderate with 98.8%. While the Golestan in the dry-hot had the lowest percentage of mature seed weight among the studied cultivars. The highest and the lowest failure force were in Khurshid, 83.75 N, and Golestan from dry- hot regions with 47.9N. In general, results cleared that failure force, percentage of crashed,,, broken, immature,, 100-seed weight and seed size for Golestan in both climates dry-moderate and dry-hot showed that both hull seed and de-hulled the Golestan seeds which are produced in dry-moderate are more tolerant rather than the seeds of dry-hot.
Parimah Shokouhi Nasab; Hamidreza Balouchi; َAli Moradi; Mohsen Movahhedi Dehnavi
Abstract
This experiment was conducted in order to investigate the effect of seed coating with biochar and activated carbon on some quinoa seed germination indicators, and it was implemented as a factorial in the form of a completely randomized design with four replications in 2019, in Yasouj University's Faculty ...
Read More
This experiment was conducted in order to investigate the effect of seed coating with biochar and activated carbon on some quinoa seed germination indicators, and it was implemented as a factorial in the form of a completely randomized design with four replications in 2019, in Yasouj University's Faculty of Agriculture. The first factor is seed coating in four levels (no coating, coating with activated carbon, coating with biochar and coating with activated carbon + biochar) and the second factor includes salinity stress in four levels (zero, 75, 150 and 225 mM sodium chloride). The results of the interaction of salinity stress and seed coating showed that the highest content of soluble sugar (28.578 mg/g seed FW) and malondialdehyde (2.97 µmol/g seed FW) was obtained by coating with activated carbon in 150 mM salinity stress. Also, the highest amount of seed hydrogen peroxide (0.18 μmol/g seed FW) and proline (10.49 μmol/g seed FW) at the level of 225 mM sodium chloride was obtained by covering the seeds with biochar and active carbon, respectively. Covering seeds with activated carbon and biochar led to an increase in the length of root and shoot under salt stress conditions. However, under salinity stress conditions, root weight and length vigor index of seed improved more by coating seeds with activated carbon. It can be stated that seed coating can greatly reduce the harmful effects of osmotic stress on germination and biochemical traits in quinoa seedlings and improve seedling growth.
Dariush Taleghani; Saeid Sadeghzadeh Hemayati; Farahnaz Hamdi Holasoo; Mehdi Sadeghi-shoae
Abstract
The use of various types of polymers in the field of seed processing (coating seeds of various types of plants) has become very important in recent years. Polymer materials are used to add a mixture of fungicides and pesticides and growth regulators to help protect plant seedlings from growing and deploying ...
Read More
The use of various types of polymers in the field of seed processing (coating seeds of various types of plants) has become very important in recent years. Polymer materials are used to add a mixture of fungicides and pesticides and growth regulators to help protect plant seedlings from growing and deploying better against pathogens and harmful insects in the early stages of plant growth. This research was carried out with the aim of making internal polymer and its feasibility study in seed of three sugar beet, corn and alfalfa crops during the years of 2014-2015. In order to compare the effect of foreign and internal polymer, seed quality, germination, abnormality percentage, Radicle length in laboratory and Seed vigor in greenhouse were evaluated. The results of the obtained spectra and surface tension the comparison of the polymer prepared with the foreign polymer used as a control. It can be concluded that the internalized polymer is physically and mechanically similar to that of an external polymer. Application of polymer in sugar beet cover had no adverse effect on germination and seed establishment. The results of this study showed that the synthesized internal polymer in this study can be used to coating the seeds of sugar beet and alfalfa and 1% and 1.5% for corn seeds in order to achieve optimum seed coating and not to have an adverse effect on their qualitative traits.
